Locking eBook Orientation

There are two options to lock the eBook orientation. The best way is to include the locking code in the com.apple.ibooks.display-options.xml file.

Step 1: Open the .xml file in your notepad/wordpad. And you will see the code as below:

Now, as you know there are two types of eBooks:

1. Reflowable (Landscape/Portrait)
2. Fixed Layout (Landscape/Portrait)

So let’s see code of xml file for each.

1. Reflowable: For a reflowable eBook, the xml file will have the following code:

 <?xml version=”1.0″ encoding=”UTF-8″?>
<display_options>
<platform name=”*”>
<option name=”specified-fonts“>true</option>
</platform>
</display_options>

2. Fixed Layout: For this type of eBook, the xml file will have the following code:

 <?xml version=”1.0″ encoding=”UTF-8″ ?>
<display_options>
<platform name=”*“>
<option name=”specified-fonts“>true</option>
<option name=”fixed-layout“>true</option>
</platform>
</display_options>

To add Locking Orientation to reflowable/fixed layout eBook, add the below code as per your requirement in the xml file:

Landscape:  <option name=”orientation-lock“>landscape-only</option>
Portrait:  <option name=”orientation-lock“>portrait-only</option>

Step 2: Once the code is added for the respective mode, save and close the xml file. And embed(drag and drop) it through Total Commander software in the META_INF folder with the container file. Alternatively you can create a zip of the ePub file and drag and drop the xml file in the META-INF folder and can rename .zip to .epub again.